Searching for Cisco Routers That Support Gre information? Find all needed info by using official links provided below.
https://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/118361-technote-gre-00.html
Aug 08, 2018 · Keepalives on the GRE tunnel interface are used in order to solve this issue in the same way keepalives are used on physical interfaces. With Cisco IOS ® Software Release 12.2(8)T, it is possible to configure keepalives on a P2P GRE tunnel interface. With this change, the tunnel interface dynamically shuts down if the keepalives fail for a certain period of time.
https://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/118370-technote-gre-00.html
May 17, 2017 · A GRE tunnel is a logical interface on a Cisco router that provides a way to encapsulate passenger packets inside a transport protocol. It is an architecture designed to provide the services in order to implement a point-to-point encapsulation scheme. GRE tunnels are designed to be completely stateless.
http://www.firewall.cx/cisco-technical-knowledgebase/cisco-routers/868-cisco-router-gre-ipsec.html
Generic Routing Encapsulation (GRE) is a tunneling protocol developed by Cisco that allows the encapsulation of a wide variety of network layer protocols inside point-to-point links. A GRE tunnel is used when packets need to be sent from one network to another over the Internet or an insecure network.4.6/5(69)
https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/41940-dmvpn.html
Jan 04, 2006 · GRE tunnels are implemented on Cisco routers by using a virtual tunnel interface (interface tunnel<#>). The GRE tunneling protocol is designed to handle IP multicast/broadcast packets so a dynamic routing protocol can be “run over" a GRE tunnel. GRE tunnel packets are IP unicast packets that encapsulate the original IP multicast/unicast packet.
https://community.cisco.com/t5/routing/routers-supporting-gre-tunnels/td-p/798105
Re: Routers supporting GRE tunnels. Hi, The limitation of the interfaces is bind to the IDB (Interface Descriptor Blocks) limit which is a function of the IOS and the Platform. You can use the show idb command on your platforms to see what the limits will be on your gear.
https://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/13725-56.html
Aug 10, 2005 · Sometimes when traffic goes through a generic routing encapsulation (GRE) tunnel, you can successfully use the ping command and Telnet, but you cannot download Internet pages or transfer files using File Transfer Protocol (FTP). This document explains a common reason for this problem, and offers several workarounds.
https://www.cisco.com/c/en/us/support/routers/887va-integrated-services-router-isr/model.html
Configuring a Cisco 827 Router to Support PPPoE Clients, Terminating on a Cisco 6400 UAC Configuring a PC as a PPPoE Client to Connect to Two ISPs With a 6400 UAC Configuring a Router IPsec Tunnel Private-to-Private Network with NAT and a Static
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